Position-bracket for sewing-machines



I G.JACKSON.

POSITION BRACKET FOR SEWING MACHINES.

APPLICATION FILED [350.19. 1917.

1,303,904. Paiehted May 20., 191 9.

- IGNVENTOR. ay w% I;

A TTORNEYS.

UN T D I STATE PATENTOFFIQE GEoReE'JAoKson, [or CHICAGO, innnv'ois, ASSIGNOR'OFIONE-HALF' .ro onnanivcne. 1

"MeoLAY, or oH oAeo, ILLINOIS.

' POSITION-BRACKET FOR SEWING-MACHINES.

i To all colio m it may concern Be it known that I, GEORGE JAoKsoN, a citizenof the United States, residing at Chicago, in the countyofllookgand State of, Illinois, have invented new and useful-Inn,

provements in Position Br'ackets for Sewg-Machines, of which. the following is a specification.

This invention relates to sewing machines of the oscillating hook type, and its object is to provide a novel and improved posltion bracket which is so constructed that the bobi bin case can be removed from the machine without removal of thebracket, thus facilitating the removal of obstructions whlch may have found lodgment in the pit in which the bobbin case and its associated parts are located. As ordinarily constructed, the position bracket is securely fastened down in place and'its removal is diflicult. The present position bracket has therefore been provided with a movable part which can be swung out of the way, thereby making it easy to remove the bobbln case;

Inorder that the invention may be better understood, reference is had to the accompanying. drawing forming a part of this specification, and in said drawing,

Figure 1 is a plan view of that portion of a sewing machine to which the invention 1s applied, the same being shown tilted;

Fig. 2 is a plan view of the oscillating hook and the parts. associated therewith;

Fig. 3 is a view similar to Fig. 2, but showing the position bracket swung to permit removal of the bobbin case; Fig. 4; is a section on the line 4.4 of Fig.

7 v 2, and

3 other parts are located, the same being closed by a cover plate 6 which has been removed Fig. 5 is a perspective view of the position bracket. p

Referring specificallyto the drawing, 6 denotes the pit in which the bobbin case and in Figs. 2 and 3. The pit has the usual oscillating hook 7 on which the Web 8 of the bobbin case 9 rests and slides.

At 10 is shown the main body portion of the position bracket, the same having the usual rearward extension 11 provided with a lateral offset 12 which hasa vertical flute 13 along which the needle reciprocates. Or-

dinarily, these parts of the position bracket are integral, and they are fastened in the pit 6 by a screw 14 so that the offset 12 can- Specification of Letters Patent.

Patented May '20, 1919.

' mamaa naae1 .9 1 n- 2.0 .9

notget into the path of thene'edle and break the same; Howeve'r,;..in the present instance, the body portion 10 and the extension 11 are S613 .ara te and shaped to. overlap, as shown at 15, with the screw 14 passing through said overlapping parts, so that the screw not only fastens the position bracket in the pit but also connects the two parts constituting the bracket. As it is important that the extension 11 should not change its position in the pit for the reason hereinbefore pointed out, it is provided with a depending pin 16 at the bottom, said pin lodging in a recess 17 in the bottom wall of the pit 6. The extension 11 is therefore secured at two points against lateral motion even when the screw 14 is not tightened sufficiently to prevent the portion 10 of the bracket which faces the bobbin case 9 to be swung.

The screw 14; provides a pivotal connection for the part 10 so that it can be swung laterally away from the bobbin case 9, from the holding position shown in Fig. 2 to the position shown in Fig. 3, to permit the bobbin case, with its integral web 8, to be moved sidewise sufficiently to separate the lower web 18 of the bobbin case from the left hand side of the oscillating hook 7 The bobbin case can now be easily and quickly removed.

It will be evident from the foregoing that the portion 10 of theposition bracket ispivoted at one end to swing transversely of the bobbin case 9. The free end of the bracket 1 is engageable by a latch when in holding po' sition. This latch, is a small block 19 slidably mounted in a groove 20 in the wall 21 7 the bobbin case 9 as hereinbefore described.

It will be understood,of course, that various other latch devices may be provided for holding the free end of the part 10, and the structural details shown are also capable of various modifications without a departure from the spirit and scope of the, invention as I claimed hereinafter. j

I claim 1. A position bracket forholding the bobbin case of a sewing machine, comprising a main body portion having a rearward extension provided with a lateral ofl'set having a vertical flute along which theneedle reoip .rocates, said body portion and extension being pivotally connected to permit the body relative to the body portion.

. 2. 'A position bracket for holdingthebobbin'case of a sewing machine, comprising a.

' main body portion having a rearward eXten-' sion provided with a lateralofi'siet havinga the body portion.

Vertical flute along which the needle reciprocates, said body portion and extension be-' ng plvotally connected to permit the body portion to swing laterally of the bobbin case to releasethe same, the pivotal connection 7 also being the attaching means of the bracket and means for holding the extension in predetermined position relative 'to In testimony whereof I affix my signatnre.

GEORGE qAoKso l copies of this patent may be obtained for five cents each, by addressing-the"Commissioner of Patents 1 Washington, D. G. 

